NTE1843
Integrated Circuit
FM Front End
Description:
The NTE1843 is an integrated circuit in a 9鈥揕ead SIP type package designed for use in FM front鈥揺nd
applications. Typical applications include portable radio and radio cassettes.
Compared with conventional types, supply voltage dependence, overload characteristics and spuri-
ous radiation characteristics are improved.
Features:
D
Wide Supply Voltage Range: V
CC
= 1.6V to 6.0V
D
Excellent Supply Voltage Dependence of Loacl Oscillator: Oscillator Stop V
CC
= 0.9V Typ
D
Improved Inter鈥揗odulation Charactristics by Double Balanced Type Mixer Circuit
D
Low Spurious Radiation
D
Built鈥揑n Clamping Diode for the Local Oscillator Output
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Derate Above 25擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4mW/擄C
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +75擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Electrical Characteristics:
(T
A
= +25擄C, V
CC
= 5V, f = 83MHz, f
m
= 1kHz,
鈭唂
= 22.5kHz dev. unless
otherwise specified)
Parameter
Supply Current
鈥?dB Limiting Sensitivity
Quiescent Sensitivity
Conversion Gain
Local OSC Voltage
Parallel Input Resistance (Pin1 Impedance)
Parallel Output Resistance (Pin3 Impedance)
Parallel Output Capacitance (Pin3 Impedance)
Parallel Input Resistance (Pin4 Impedance)
Parallel Input Capacitance (Pin4 Impedance)
Parallel Output Resistance (Pin6 Impedance)
Parallel Output Capacitance (Pin6 Impedance)
Local OSC Stop Voltage
Symbol
I
CC
V
in(lim)
Q
S
G
C
V
OSC
r
ip1
r
op3
c
op3
r
ip4
c
ip4
r
op6
c
op6
V
stop
f = 10.7MHz
f = 83MHz
f
OSC
= 60MHz
Test Conditions
V
IN
= 0
Min
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
150
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Typ
5.2
3.0
11
31
230
57
25
2.0
2.7
3.3
100
4.8
0.9
Max
8.0
7.0
鈥?/div>
鈥?/div>
350
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
0
鈥?/div>
1.3
Unit
mA
dB碌
dB碌
dB
mV
rms
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